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<?php namespace Illuminate\Queue;

use Aws\Sqs\SqsClient;
use Illuminate\Queue\Jobs\SqsJob;

class SqsQueue extends Queue implements QueueInterface {

/**
	 * The Amazon SQS instance.
	 *
	 * @var \Aws\Sqs\SqsClient
	 */
	protected $sqs;

/**
	 * The name of the default tube.
	 *
	 * @var string
	 */
	protected $default;

/**
	 * Create a new Amazon SQS queue instance.
	 *
	 * @param  \Aws\Sqs\SqsClient  $sqs
	 * @param  string  $default
	 * @return void
	 */
	public function __construct(SqsClient $sqs, $default)
	{
		$this->sqs = $sqs;
		$this->default = $default;
	}

/**
	 * Push a new job onto the queue.
	 *
	 * @param  string  $job
	 * @param  mixed   $data
	 * @param  string  $queue
	 * @return mixed
	 */
	public function push($job, $data = '', $queue = null)
	{
		return $this->pushRaw($this->createPayload($job, $data), $queue);
	}

/**
	 * Push a raw payload onto the queue.
	 *
	 * @param  string  $payload
	 * @param  string  $queue
	 * @param  array   $options
	 * @return mixed
	 */
	public function pushRaw($payload, $queue = null, array $options = array())
	{
		$response = $this->sqs->sendMessage(array('QueueUrl' => $this->getQueue($queue), 'MessageBody' => $payload));

return $response->get('MessageId');
	}

/**
	 * Push a new job onto the queue after a delay.
	 *
	 * @param  \DateTime|int  $delay
	 * @param  string  $job
	 * @param  mixed   $data
	 * @param  string  $queue
	 * @return mixed
	 */
	public function later($delay, $job, $data = '', $queue = null)
	{
		$payload = $this->createPayload($job, $data);

$delay = $this->getSeconds($delay);

return $this->sqs->sendMessage(array(

'QueueUrl' => $this->getQueue($queue), 'MessageBody' => $payload, 'DelaySeconds' => $delay,

))->get('MessageId');
	}

/**
	 * Pop the next job off of the queue.
	 *
	 * @param  string  $queue
	 * @return \Illuminate\Queue\Jobs\Job|null
	 */
	public function pop($queue = null)
	{
		$queue = $this->getQueue($queue);

$response = $this->sqs->receiveMessage(
			array('QueueUrl' => $queue, 'AttributeNames' => array('ApproximateReceiveCount'))
		);

if (count($response['Messages']) > 0)
		{
			return new SqsJob($this->container, $this->sqs, $queue, $response['Messages'][0]);
		}
	}

/**
	 * Get the queue or return the default.
	 *
	 * @param  string|null  $queue
	 * @return string
	 */
	public function getQueue($queue)
	{
		return $queue ?: $this->default;
	}

/**
	 * Get the underlying SQS instance.
	 *
	 * @return \Aws\Sqs\SqsClient
	 */
	public function getSqs()
	{
		return $this->sqs;
	}

}

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